Chapter 4: AMI BIOS
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Device Tagging
Select Enable to support device tagging. The options are Disable and Enable.
South Bridge Conguration
The following South Bridge information will display:
USB Conguration
•USB Module Version
•USB Devices
Legacy USB Support
Select Enabled to support onboard legacy USB devices. Select Auto to disable
legacy support if there are no legacy USB devices present. Select Disable to have
all USB devices available for EFI applications only. The options are Enabled,
Disabled and Auto.
XHCI (Extensible Host Controller Interface) Hand-Off
This is a work-around solution for operating systems that do not support XHCI (Ex-
tensible Host Controller Interface) hand-off. The XHCI ownership change should be
claimed by the XHCI driver. The settings are Enabled and Disabled.
EHCI (Enhanced Host Controller Interface) Hand-Off
This item is for operating systems that do not support Enhanced Host Controller
Interface (EHCI) hand-off. When this item is enabled, EHCI ownership change will
be claimed by the EHCI driver. The settings are Enabled and Disabled.
Port 60/64 Emulation
Select Enabled for I/O port 60h/64h emulation support, which in turn, will provide
complete legacy USB keyboard support for the operating systems that do not sup-
port legacy USB devices. The options are Disabled and Enabled.
USB 3.0 Support
Select Enabled for USB 3.0 support. The options are Smart Auto, Auto, Enabled,
Disabled and Manual.
EHCI1
Select Enabled to enable EHCI (Enhanced Host Controller Interface) support on
USB 2.0 connector #1 (-at least one USB 2.0 connector should be enabled for EHCI
support.) The options are Disabled and Enabled.
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